50 pages on this wiki. Oxford comma (also known as the serial comma or Harvard comma) is the name given to the optional final comma in a series. In the phrase ham, egg, and chips it's the comma between egg and and. Entirely optional-correct punctuation neither demands nor requires it.0 pages on this wiki. Oxford comma (also known as the serial comma or Harvard comma) is the name given to the optional final comma in a series. In the phrase ham, egg, and chips it's the comma between egg and and. Entirely optional-correct punctuation neither demands nor requires it.
An Ozone Action Day, which can be declared by a local municipality, county or state, is observed at certain times during the summer months, when weather conditions (such as heat, humidity, and air stagnation) run the risk of causing health problems.he ozone layer protects people from the sun's most damaging ultraviolet rays. Because the ozone layer is located high in the atmosphere, people are not directly exposed to it. Ground-level ozone, however, is a health hazard because people breathe it.
Earth Day is an annual event, celebrated on April 22, on which day events worldwide are held to demonstrate support for environmental protection. It was first celebrated in 1970, and is now coordinated globally by the Earth Day Network and celebrated in more than 193 countries each year. On Earth Day 2016, the landmark Paris Agreement is scheduled to be signed by the United States, China, and some 120 other countries.